Water pump



r J. M. BENSON Aug. 15,

WATER PUMP Filed Feb. 10, 1941 3 Sheets-Sheet' l Aug. 15, 1944; J.VM.BENSON 2,355,698 7 WATER PUMP Ji-YZZZQ on I MM Aug. 15, 1944. J. BEN-SONWATER PUMP 5 Sheets-Sheet 5 Filed Feb. 10, 1941 JM Be 725072 PatentedAug. 15, 1944 UNITED STATES PATENT OFFICE WATER PUMP I Jesse M. Benson,Concord, Tenn. Application February 10, 1941 Serial No. 378,291

5 Claims.

This invention relates to reciprocating pumps.

An object of this invention is to provide a pump structure wherein theoperating features of the pump are enclosed in a lubricant chamber sothat there is no possibility of water entering the chamber.

Another object of this invention is to provide a pump structure whereinthe major portions thereof may be formed of cast metal requiring aminimum of machining.

A further object of this invention is to provide a pump structurewhichis simple in construction and wherein the pulling force on the pumprod is parallel with the length of the rod. I

A further object ofthis invention is to provide a pump in whichthe powermeans for the pump is positioned in ofiset relation to the pump rod andin which thepumping cylinder is not connected with the operating meansfor the rod so that water or other fluid. leaking out of the pumpingcylinder will not work its way into the oil-sealed pump operatorhousing.

A still further object of this invention is to'provide a pump structurewhich is so constructed that it may be quickly connected to the wellpipe and may also be quickly disconnected therefrom, the well pipe andpumping rod connections being positioned closely-together and alsoincluding a separable coupling and a casing cap for preventing droppingt pump is disconnected;

A further object of this invention is to provide a pump structureincluding a power member in the form of an electric motor and animproved means for mounting the motor on the pump housing so that themotor may be adjusted to provide the desired tension on the drivingbelt, and. so that the motor may be quickly removed or replaced.

A further object of this invention is to provide an improved means forcoupling the pitman with the driving lever and the pump rod operator.

Embodying the objects aforesaid and others which may hereinafter appear,the inventionconsists of the novel constructio combination andarrangement of parts to be more specifically referred to and illustratedin drawings, wherein is shown an embodiment of this invention, but it isto be understood that changes, variations and modifications may. beresorted, to which fall within the scope of the invention as-cl'aimed.

In the drawings:

Figure 1 is a detailsideelevation of a pump" the well pipe after the theaccompanying.

constructed according to an embodiment of this invention,

Figure 2 is a side elevation partly insection of the housing with thecover or one side removed,

Figure 3 is a detail front elevation partly broken away and in section,

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure2, V

Figure 5 is a fragmentary sectional view taken on the line 5-5 of Figure2 Figure 6 is a fragmentary sectional view taken on the line 6-6 ofFigure 2,

Figure 7 is asectional view taken on the line l--1 of Figure 6,; l V

Figure 8 is a side elevation of the driving gear bearing structure,

Figure 9 is a sectional view taken on the line 9-9 of Figure 2,

. Figure 10 is a sectional view taken on the line lB-Hl of Figure 2,

Figure 11 is a fragmentary sectional view taken on the line llll ofFigure 2, and

Figure 12 is afragmentary side elevation of the mounting for the powermember.

Referring to the drawings; the numeral 15 designates generally a housingwhich is co structed of complementary housing'members I6 and IT. Thehousing member I! comprises a removable cover by means of which theoperatingparts in the housing member I 6 may be exposed for repair orreplacement when necessary.

The housing member it comprises a vertical side wall l8; a bottom walll9; front and rear end walls and 2| respectively, and a top wall 22. Thebottom, end and topwalls of the lion's ing member. is are provided alongtheir inner edges with a groove'or'cha'nnel23 within which a'sealing'gasket or element 24is adapted to engage. The housing member "isconstructed similar to the housing member it including side, end andbottom walls complementary to the housing member l6 so as to-form arectangular housing:

The housing l5 issupported by means of-a rear leg having an upper flangeZiiwhich is secured by a fastening deVice ZT tothe bottom wall 19 0f l6. horizontally: disposed" the housing. member plate 28 is fixedrelative to" the front wall' 2010f the housing member I6, beingsupportedforwardly from the front wall 20 by- 'meansof bracing memberstively, are secured by fastening devices 35 and 29 and 30 which are castintegral with the housing member l6. and thehousing 36, respectively, tothe plate supporting members 29 and 30. The plate 28 is fixedly securedto the supporting members 29 and 30 by fastening devices 31 and 38 whichengage through the supporting members 29 and 30.

A pumping cylinder 39 is disposed forwardly of the forward wall 20 ofthe housing member I6 and is secured at its lower end in a reducingconnector 40 which engages in a substantially T-shaped connection 4|which is fixed at its lower end to the plate 28. A pumping rod 42 isdisposed axially of the cylinder 39 and has secured thereto a pluralityof cup-shaped washers 43 which are held in spaced apart relation bymeans of washers 44 and tightly secured on the pumping rod 42 by meansof a lower nut 45. The pumping rod 42 at its lower end is adapted to beconnected to a pumping rod member 46 which extends downwardly throughthe well pipe 41, The pipe 41 is disposed axially of a well casing 48which is extended into the ground and preferably, a cap 49 having anouter cylindrical flange 50 engages over the top of the well casing 48and is provided with an axial opening 5| through which the well pipe 41extends. A relatively short section of pipe 52 is connected to the T orcoupling member 4| and is also connected to the well pipe 41 by means ofa co'nventional union 53. The pumping rod 42 is adapted to be connectedto the rod 46 by means of a coupling 54 which, when the rod 42 is in itsuppermost position, is adapted to be disposed adjacent the union 53 sothat when the union 53 is uncoupled from the well pipe 41, the rod 42may also be uncoupled at substantially the same point from the rod 46.

The pumping cylinder 39 at its upper end is open and a verticallyslidable shaft 55 is formed integral with the pumping rod 42 andslidably extends into the pumping cylinder 99. In practice the pumpingrod 42 is formed as a reduced extension of the shaft 55.

A vertically slidable shaft 56 is slidable in a pair of spaced apartbearings 51 and 58 which are secured to the housing member I 6 byfastening devices 59 and 60 respectively. The upper end of the shaft 56is provided with a reduced extension 6| and the upper end of the shaft55 is also provided with a reduced extension 62. A cross head 63 engagesthe reduced extensions 6I and 62 and is tightly secured thereon by nuts64 and 65. The bearing or guide member 51 is an upper guide member andis provided with a cylindrical guide extension 66 which extends throughan arcuate recess 61 and the guide extension 66 is sealed in the recess61 by a sealing means 68. The guide member 58 is a lower guide memberand is also provided on its upper side with a cylindrical guide bushing69 through which the shaft 56 slidably engages. V I

A drive shaft I is rotatably mounted in a cylindrical bearing 1| whichis provided with an annular flange I2 secured by fastening devices I3 tothe outer side of the side wall I8 of the housing member I 6. The shaftI0 inwardly from the .side wall, I8 has secured thereto or formedintegral therewith a driving gear 14. The bearing member II is formedwith a cylindrical extension 15 which extends into the housing member I6through an opening 76. The bearing extension I is formed with an arcuatecutout 'II intermediate its ends, and preferably, the gear 14 is alsoprovided with ashaft extension I8 rotatably engaging in a cylindricalbearing 19 which ex- 56 as shown in Figure 10 is tends inwardly from thebearing or housing member 15.

A relatively large driven gear is adapted to mesh with the driving gearI4 and is rotatably mounted on a stationary shaft 8|. The shaft BI isformed with a reduced extension 82 extending through the wall I8 andalso through a boss 84. A nut 85 is threaded onto the reduced extension82 so as to fixedly secure the shaft 8| relative to the wall I8. Thegear is provided with a hub 86 which spaces one side of the gear 80 fromthe side wall I8. A bushing or bearing sleeve 81 is mounted within thehub 86 and extends through the gear 80 and rotatably engages thestationary shaft 8|. An eccentric 88 is fixed to or formed integral withthe inner side of the gear 80 and the bearing sleeve 86 extends throughthe eccentric 88 as shown in Figure 4. A reduced hub 89 is formed withthe inner side of the eccentric 88 and is disposed closely adjacent theside wall 90 of the housing member H.

A pump operating lever 9| which is formed with a split ring 92 isdisposed in the housing I5, the ring 92 engaging the eccentric 88. Thering 92 is provided with a pair of ears 93 and 94 which are securedtogether by a fastening device 95. In this manner the ring 92 may bedrawn together so as to provide the desired bearing surface on theperiphery of the annular eccentric 88.

The lever 9| at its lower end is provided with an enlarged boss 96having a bearing sleeve 9'! extending therethrough. A pitman generallydesignated as 98 is adapted to be connected to the lever 9| and thepitman 98 comprises a pair of elongated fiat bars 99 and I00, which attheir lower edges are secured together by means of a pair of spacingplates |0I and I02. The plates IOI and I02 are adapted to be welded tothe bars 99 and I00. A pin I03 extends through the two pitman bars 99and I00 and through the bushing 91 and is held against endwise movementby means of a cotter pin I 04 which extends through a lug I05 fixed tothe outer side of the pitman bar I00.

The lower end of the vertically slidable shaft provided with atransversely extending opening in which a bearing sleeve I06 is mounted.A pin I01 extends through openings I08 and 09 which are formed in thepitman bars 99 and I00 respectively and a cotter pin H0 is extendedthrough the pin or shaft I01 and also extends through an outstanding lugIII which is welded to the outerside of the pitman bar I00. I

A rock arm I I2 which at its upper end is formed with a cylindricalbearing II 3 is connected to the opposite end of th pitman 98 by meansof a pin or shaft II 4. The pin II4 extends through openings H5 and H6formed in the pitman bars 99 and I80 and a cotter pin II! engagesthrough one end of the pin or shaft H4 and also through a lug I I8 whichis secured in outstanding relation to the outer side of the pitman barI00. The bearing I I 3 has mounted therein a bearing sleeve 9 whichengages a stationary shaft I20. The shaft I20 is provided with a reducedstub shaft I2I engaging through the side wall I8 and also through a bossI22 carried by the side wall I 8. A nut I23 is threaded onto the stubshaft I2I and tightly holds the shaft I20 relative to the'side wall I8.

The side wall 90 is provided with a bearing boss I24 within which an endof the stationary shaft 8| engages. The boss I24 is closed at its outerend so that no lubricantor other liquid may leak out from the housingI5. A bearing boss I25 is carried by the side wall 90 of the housingmember IT and one end of the stationary shaft I engages within the bossI as shown in Figure 5.

The two housing members It and I1 have fixed in the corners thereof lugsor plugs I26 provided with holes I21 through which fastening devices I28engage so as to hold the two housing members I5 and Il tightly together.A power member I29 in the form of an electric motor is mounted on top ofthe housing I5 and the base of the motor I25 is provided with a baseplate I35. The plate I30 on one edge thereof has fixed thereto a pair ofL-shaped slide members I3I which engage over an outstanding flange I32carried by the housing member. I1 at the upper end of the side wall 90.The base I on the edge thereof opposite from the slide members I3I hasfixed thereto a nut I33 through which a set screw I34 engages. In thismanner the power member I29 may be adjusted lengthwise of the upper endof the housing I5. The motor I29 has a driving pulley I35 mounted on theshaft I36 thereof and an endless belt I31 is trained about the drivingpulley I35. A driven pulley I35 is fixed to a stub shaft I33 by means ofa set screw I I-II. The stub shaft I39 is formed integral with the shaftIII. A packing gland MI is threaded onto the bearing II and a packingI42 is disposed within the gland member MI so as to prevent anylubricant or other liquid from leaking out of the bearing member "I I.

In the use and operation of this pump, the

motor I29 is adapted to be connected to a suitable source of electriccurrent supply and upon operation of the motor I29 the driven pulley I38will be rotated. Rotation of the pulley I38 will effect rotation of thedriven gear 80 through the driving gear Id. As the gear 85 rotates thecam 88 will rotate so as to vertically reciprocate the pitman operatinglever 9|. Rocking of the pitman 98 will eifect vertical reciprocation ofthe shaft 55 which through the cross head 53 will reciprocate theplunger shaft 55. The water which is pumped from the well pipe 41 willbe ejected through the branch I43 formed as part of the T M. The housingI5 is adapted to be filled with a lubricant, such as oil or the like,and the quantity of lubricant in the housing I5 is substantially greaterthan one-half of the housing I5, the level of the lubricant beingdefined by the line I44 in Figure 2.

In the event it is desired to disconnect the pumping structure from thewell pipe 41, the union 53 is uncoupled from the pipe member 52 which iscarried by the pump structure and the rod coupling member 54 isuncoupled from the two rod members 52 and 46. The lower portion I45 ofthe union 53 is retained on the pipe 41 so that when the union 53 isuncoupled from the pump, the union part I45 will contact with the top ofthe cap 49 so as to thereby prevent the well pipe 41 from dropping downinto the casing 48 below the upper end of the casing 58.

It will be apparent from the foregoing that no water from the pumpingcylinder 39 will be able to enter the housing I5 so that the operatingparts of the pump will be thoroughly sealed against the entrance ofwater, and the sealing of the pump structure in the housing I5 will notdepend on any gland between the pump cylinder 39 and the housing I5. Theoperating elements of the pump structure will, therefore, be able tofreely operate in a liquid lubricant so that these elements will notbecome deteriorated by contact with any water from the pump.Furthermore, by providing the housing I5 in two complementary parts andby supporting the operating elements from only part, the housing may bereadily uncoupled to expose the operating parts by merely removing thecover or one side I! of the housing. A filling plug I46 is threaded intothe top wall 22 of the housing member It so that the lubricant may bedischarged into the housing I5 and a drain plug I I'I is threaded intothe bottom wall IQ of the housing member I6.

What I claim is:

1. In a well pumping means having a closed housing, a verticallydisposed cylinder exteriorly of the housing, a reciprocatory sectionalpumping rod operating in and dependin from the cylinder, a pistonattached to the rod and means within and extending from the housing foroperating said rod; a horizontally disposed apertured plate exteriorlyof and fixed relative to said housing, said plate being arranged belowand spaced from the cylinder, a substantially T-shaped upstandingcoupling connection on and fixed at its lower end to said plate, atubular reducing connection between the upper end of said couplingconnection and the lower end of the cylinder for maintaining the lattervertical and for establishing communication between the cylinder andT-coupling connection, supportin means for said plate, a sectional wellpipe attached to said T-coupling connection and depending through theaperture in said plate, and said supporting means formed with openingsto provide for access to said pipe and rod.

2. In a well pumping means, a cylinder, a pumping rod operating in saidcylinder, a piston attached to said rod, means for operating said rod, ahorizontally disposed plate fixed to the housing of said pump, aT-shaped coupling connection fixed to said plate, a reducing. connectionfor establishing communication between the cylinder and. T-couplingconnection, a well pip attached to said T-coupling connection, and meansincluding a casing and a casing cap for preventing dropping of the wellpipe into the casing after the same is disconnected.

3. A pump structure including a well pipe, a pump rod, means whereby thepump structure may be connected to and disconnected from well pipe, saidmeans for connecting said well pipe and pump rod being positionedclosely together, and including a separable coupling, a casing, andmeans whereby dropping of the well pipe into said casing after the pumpis disconnected therefrom may be prevented.

4. A pumping mechanism comprising a pump cylinder, a piston slidable insaid cylinder, a pump rod secured to said piston, a pair of spaced apartbearings in which said shaft is slidable, a horzontally disposed plateand a T-shaped coupling connected to said plate, means for establishingcommunication between said cylinder and said T-coupling connection, awell pipe attached to said T-coupling connection, and means whereby saidwell pipe may be held in fixed position after it has been disconnected.

5. In combination a pump, including a housing, a horizontally disposedplate fixed to said housing, a cylinder disposed exteriorly of saidhousing, a pumping rod operating in said cylinder, a piston attached tosaid rod, and a power member for operating said pump.

JESSE M. BENSON.

